We're about to close this page, but before we do, here are some key points from other political guests on today's Sunday with Laura Kuenssberg.

Shadow defence secretary James Cartlidge told Laura Kuenssberg he "fundamentally" agrees the Ministry of Defence (MoD) needs extra money, and that making cuts to the welfare budget has to be "a big part of it".

"A nation where thousands and thousands of young people are going on to benefits because they have anxiety and so on, that is not a country that's getting stronger, it's getting weaker," he said. "So cutting welfare to fund defence is actually about building a stronger country that's more resilient."

Meanwhile, Lib Dem leader Ed Davey said the MoD should not "get whatever cash they want", as extra funding needs to be "properly debated and considered".

But for him, what's clear is "we need to get 3% of GDP on defence spending by the end of this decade", and "we need to go further in the next decade".

In today's Sunday with Laura Kuenssberg, we've also heard from Ian Russell, the father of Molly Russell, a teenager who took her own life after viewing harmful content online.

He says he's "dismayed" by reports the government is looking to ban young people from some social media platforms.

Russell believes the prime minister has "rushed" to announce a new policy on children's access to social media.

"I can't think of a reason other than a political reason... If he's playing politics, what he's doing is gambling with young people's lives, and I find that deplorable," he tells Kuenssberg.

"This is not about politics - it is about protecting children," he adds.

It's still unclear whether the government will introduce a blanket ban. Culture Secretary Lisa Nandy has said Prime Minister Keir Starmer is set to make an announcement about young people's social media safety on Monday.

• You can read more from Ian Russell's interview here

Pressure on PM over defence funding likely from different quarter in coming dayspublished at 10:41 BST

10:41 BST

Laura Kuenssberg
Sunday with Laura Kuenssberg

Image source, PA Media

Awkwardly for the prime minister, you can be pretty sure in the next few days that the pressure will come very publicly from a different quarter.

In unfortunate timing, the G7 summit is about to start in France, hosted by Emmanuel Macron. But there'll be a visit, of course, from Donald Trump.

Now President Trump and Keir Starmer's bromance is definitively over, he may not be able to restrain himself from making pointed comments about how much the UK's spending.

For months, he's been pushing European allies to pony up more money. One of his defence team, Elbridge Colby, has already been resharing John Healey's damning resignation letter online, saying there is a "great need for more British military strength in this critical time".

It is deeply embarrassing for the UK to have this play out in front of its most important ally.

• Read more on this from Laura Kuenssberg: Are the Downing Street dominoes about to fall?

Al Carns, who quit the government as armed forces minister this week in a row over defence spending, has just been speaking on the show.

Laura Kuenssberg asks Carns, who is understood to be interested in running for the Labour leadership in a potential future contest:

"I've been told that the prime minister has got a bank account and also a company ready to fight a leadership contest, so he's all set up and ready to go. Have you done that?"

Carns does not directly answer the question, but says Labour needs an open contest of ideas about the country's direction.

"What I would like to see, whatever happens in the future, is a really clear and concise policy debate about the big ideas and the courage to take those big ideas forward for the next three years," Carns says.

Lisa Nandy says it's clear that urgent action is needed on social media safety for young people, with the prime minister due to make an announcement tomorrow.

"We know that there hasn't been enough in the way of regulation, and we know that there are wider measures that are needed as well," the culture secretary tells Laura Kuenssberg.

The minister says she doesn't want to "pre-empt the prime minister's announcement", but says the "vast majority" of people who responded during consultations were in support of a social media ban for under-16s.

"That came through not just from parents and campaigners, it did also come through from many young people themselves, who are feeling that they're being pulled into something quite toxic at a very young age."

Nandy says the government cannot stand by when young people clearly need help.

"The tech companies have had more than enough time to get their own house in order, and to be able to create products that keep children safe online.

"If they're not prepared to do it, they lose the right to market their products towards children," she says.

This week's Sunday with Laura Kuenssberg features Culture Secretary Lisa Nandy and Shadow defence secretary James Cartlidge in the hot seat, along with Liberal Democrat leader Ed Davey.

It comes after another dramatic week in Downing Street, which saw Defence Secretary John Healey and Armed Forces Minister Al Carns resign from the government, both criticising the government's plans for defence.

Carns, who told the prime minister that the government's defence investment plan is "neither transformative enough nor sufficiently funded", is also set to appear on today's panel.

Meanwhile, Nandy is expected to face questions from Kuenssberg as the prime minister prepares to announce plans for a crackdown on children's access to social media.

Some media reports have suggested under-16s could be banned from accessing some social media platforms under the plans, while safer ones would face restrictions.

We won't be bringing you regular text updates from today's programme, but you can watch live at the top of the page from 09:00.